MULTI GAS MONITOR (SI-100IM)

MULTI GAS MONITOR (SI-100IM)

USER MANUAL

SI-100IM – MAIN UNIT

SI-100IA – ALARM DISPLAY UNIT

예비전원시험

부저정지

복귀

예비전원

스위치주의

SI-10 0 IM

전원

고장

3차경보

1차경보

2차경보

%

PPM

LEL

V

SI-10 0 IA

3차경보

전원

고장

복귀

1차경보

2차경보

설정

회로시험

%

PPM

LEL

V

SI-10 0 IA

3차경보

전원

고장

복귀

1차경보

2차경보

설정

회로시험

%

PPM

LEL

V

SPARE BLANK

Multi Ga s Monitor

SI-10 0 IM

SI-10 0 IA

SI-10 0 ICU

SI-10 0 PS

SI-10 0 ASV

www.senko.co.kr

Contents

1. Overview ………………………………………………………………….……3

2. Features ……………………………………………..…………………………3

3. Specifications………………………………………………………………….4

SI-100IM (Main Alarm Unit) Configuration and Description

SI-100IA (Alarm Display Unit) Configuration and Description

4. Product’s Dimension…………………………………………………..……6

5. Internal Configuration (3-channel basis) …………………………7

6. Terminal Configuration ……………………………………….…….……8

7. Product Instruction for Use …………………………………………….9

SI-100IM (Main Alarm Unit)

SI-100IA (Alarm Display Unit)

8. Description of Features by Switch ……………………………...…..11



9. Changes in the Internal Settings…………………….……………….13

Manufacture initialization

This manual consists of contents about how to use the gas detector. All operators

involved in the operation and maintenance of the equipment should read carefully before

operation. Caution or warning signs contained in the manual will always be followed. The defects or failure of the product may be caused if our products are used outside the

scope of the environment and the product’s SPEC as specified in the manual or if the equipment is used by workers not qualified for the maintenance and repair of the

products. SENKO is not responsible for such products’ failure. Because our product

includes a default installation circuit diagram, an installation must be carried out by a qualified person. Also, regular calibration and alarm check on the device must be

performed by a qualified worker. SENKO recommend you that monthly calibration and

check be performed for the accuracy and reliability of the device. Should a problem occur, please contact the SENKO.

WARRANTY

SENKO warrants the SI series product for 24 months from the shipment date. SENKO

will repair or replace a defected product under the warranty free of charge with a new product. However, components, such as sensors, lamps, and batteries, which will have

their lives shortened as used are not applicable to this warranty. If a product was

purchased a route that SENKO does not recognize, a product with malfunction cannot be repaired or replaced free of charge when mechanical damages or deformations happen

from improper use of the product by a consumer or when product failures occur because calibration or replacement of parts has not been made according to a procedure of

manual.

Should our product have defect or other quality problems, all the costs incurred except

the shipping cost will be borne by SENKO during the warranty period. After the warranty period, all the costs of repair, replacement, transportation of products or parts, in

principle, will be borne by customers. SENKO is not liable for any indirect or incidental loss or accidents that may occur while using the product. The warranty is limited to

replacement of parts and products. This warranty is applicable only to users who have

purchased the product from authorized sales offices or representatives specified by SENKO. Warranty repairs must be made through a SENKO-designated A/S center with

experienced technicians.

Senko Co., Ltd.

73, Oesammi-ro 15beon-gil, Osan-si, Gyeonggi-do, Korea

TEL. 031-492-0445 FAX.031-492-0446

www.senko.co.kr

WARNING

Read this manual carefully before using the instrument. The instrument will perform as designed only if it is used and maintained in accordance with the manufacturer's instruction. Otherwise, it could fail to perform as designed and persons who rely on this instrument for their safety could sustain serious personal injury or death.

http://www.senko.co.kr/

1. Overview

SI-100IM (MULTI GAS MONITOR)

With a built-in 32bit High Speed CPU, the SI-100IM product can quickly process a variety of

functions and provide precision data.

The SI-100IM product is a multi-type, composed of the Main Alarm Unit and the Alarm

Display Unit, which has from one channel to 12 channels from one main alarm unit.

The SI-100IM product, designed as a DIN Type, can be installed in a variety of designs, such

as Wall Mount Panel Type, Free Standing Type or 19 "Rack Type.

The SI-100IM products are indicated with 4 FND Digital Display and 40 units of Bar-Graphic

Display, and can generate three kinds of alarms.

The primary, secondary, tertiary alarm setting displays are indicated with 40 Arrow Displays,

which make it easy to recognize.

In addition, a unit display (LEL, PPM,%) by gas on the right of the FND Display is designated

for use so that anyone can easily determine and distinguish gas’ combustibility, toxicity ,

oxygen by intended use, thereby enabling easy management.

2. Features

SI-100IM products are equipped with three types of warning alarms, failure alarm, 4-20mA,

an output of 12V signals, etc. Flat Cable connection only to the upper of the product enables

transmission through telecommunication, thereby making a channel display of a

corresponding Alarm Unit on the Main Alarm Unit through the transmitted data, so that a

user, at a glance, can notice which alarm unit has given an alarm signal. (The three Alarm

outputs can be controlled by on / off control, and a common output of the SI-100IM can be

automatically displayed by recognizing an on / off status of the unit by channel that has

been set). A 12V signal also can be controlled.

Also, if the SI-100ICU Unit is connected to a Channel without installation of a separate

communication module, connection to Flat Cable only enables a reception of the

communication information and conversion to RS-485 signals in order to make transmission.

In addition, the SI-100ICU Unit can take INPUTs of up to eight D/I’s and convert into RS-485

signals. Because it can convert the information of SI-100IA’s 12 channels and eight D/I’s into

the RS-485 signal, it can transmit data of Total 20 channels.

Once the transfer of RS-485 signals is complete, they will be connected to Gaswin Program,

thus enabling users to control an overall status and an alarm-off, test, Stop-the-buzzer

function, and corrective actions by using the computer.

After calibration, a user can store the number of times of calibrations in the internal memory,

making the state of the sensor analyzed and displayed by converting a changed output value

after calibration into a percentage value (a replacement cycle of the sensor can be

estimated.)

3. Specifications


1 Main CPU MKE02Z64 (32bit High Speed CPU)

2 Input Power DC24V

3 Output Power DC24V

4 Input Power Display 4Digit FND Digital Display

5 Main Power Display Green LED Display, 18 Bar Graph

6 Spare Power Display 4Digit FND Digital Display, 18 Bar Graph

7 Spare Power Monitoring Red LED Display

8 Warning Alarm Display AU01 ~ AU12 Display consecutive changes of warning unit.)

9 Spare Power Test Battery Test Switch

10 Alarm Output

Alarm 1 SPDT Relay Dry contact Signal Output



Selected output among DC12V Output Alarm1 to 3

11 Operation Power DC12V~DC28V (DC12V or less CPU Sleep Mode No Display)

12 Size 40(W) x 130(H) x104(D)

13 Spare Power Ni-Cd Battery 18V 600mA (4Channel)

**While the 24V.DC power is introduced for battery charge and discharge and for the power

of the Alarm Unit, this unit can make an alarm generating unit display by communicating

with the Alarm Unit and generate an alarm.

SI-100IM Configuration and Description

1. 4Digit FND Digital Display(Input Voltage: AC/DC)

2. Green LED Display, 18 Input Voltage Bar Graph

3. Back-up Power Monitoring Lamp (Turned off when

battery is disconnected.)

4. Switch Caution Lamp (When warning is activated,

display buzzer stop)

5. Voltage Display

6. Power Lamp (POWER ICON)

7. Third warning Lamp based on SI-100IA configuration

8. Second warning Lamp based on SI-100IA configuration

9. First warning Lamp based on SI-100IA configuration.

10. Failure Lamp - Cable disconnection, Sensor defect

11. Back-up power test Switch (Check Battery connection)

12. Buzzer Stop Switch

13. Return Switch (When buzzer stops, return to initial

mode)

Power

3rd

2nd

1st Failure

Back-up

Power

Switch Caution

Recovery

Buzzer Stop

Back-up Power

Test


1 Main CPU MKE02Z64 (32bit High Speed CPU)

2 Input Type 4-20mA Full Scale

3 Measurement Display 0.000 to 9999 Digital User Setting

4 Measurement Error The bigger of FND Digital ±1% Full Scale or 1Digit

The bigger of LED Bar ±1% Full Scale or 1Digit

5 Input Measurement Cycle 10ms

6 Warning Alarm Setting Three-stage alarms (a user’s arbitrary setting), displaying a

warning with a separate ◁ Graph

7 Concentration Display 4Digit F.N.D, 40 Green LED Bar Graph(%, PPM, LEL, V Unit

Display)

8 Alarm Setting Display 40 Red Arrow LED Graph (◁)

9 Alarm Off Manual & HMI Program

10 Self-diagnosis Test Switch & Reset Switch

11 Input and output Control RS-485 (SI-100ICU Connection Option, D/I 8CH)

12 Measurement Output 4-20mA Full Scale

13 Alarm Output

Fault SPDT Relay Dry contact Signal Output (ON/OFF)

Alarm 1 SPDT Relay Dry contact Signal Output (ON/OFF)



Selected output among DC12V Output Fault & Alarm1 to 3

(ON/OFF)

14 SIZE 40(W) x 130(H) x104(D)

15 Operation Power DC12V~DC28V

SI-100IA Configuration & Description

1. 4Digit FND Digital Display(Gas Concentration)

2. Green LED Display, 40 Gas Concentration Bar Graph

3. Concentration Measurement unit( %, PPM, LEL)

4. Power Lamp (POWER ICON)

5. Third Warning Lamp according to setting value

6. Second Warning Lamp according to setting value

7. First Warning Lamp according to setting value

8. Failure Lamp (Cable disconnection & Sensor Failure)

9. Switch Setting (Check out 1, 2, 3 warning value)

10. Circuit Switch (Self Warning Test)

11. Return Switch (Return to the initial mode)

Power

3rd

2nd 1st

Failure

Configuration

Circuit Test

Recovery

4. Product’s Dimension

SI-100IM, SI-100IA UNIT DIMENSION

SI-100IM (3CHANNEL) PANEL DIMENSION

SI-10 0 IA

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복귀

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스위치주의

SI-10 0 IM

전원

고장

3차경보3차경보

1차경보

2차경보

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%

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LEL

130

40110

130

40

예비전원시험

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스위치주의

SI-10 0 IM

전원

고장

3차경보

1차경보

2차경보

%

PPM

LEL

V

SI-10 0 IA

3차경보

전원

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복귀

1차경보

2차경보

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%

PPM

LEL

V

SI-10 0 IA

3차경보

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1차경보

2차경보

설정

회로시험

%

PPM

LEL

V

SPARE BLANK

Multi Ga s Monitor

SI-10 0 IM

SI-10 0 IA

SI-10 0 ICU

SI-10 0 PS

SI-10 0 ASV

www.senko.co.kr

250

45

0

118

5. Internal Configuration (3-channel basis)

SI-100IM

1. Power Supply and Alarm Generation (Battery charging and Discharge)

2. SI-100IA: No. 01 Alarm DISPLAY Unit

3. SI-100IA: No. 02 Alarm DISPLAY Unit

4. SI-100IA: No. 03 times Alarm DISPLAY Unit

5. Terminal

6. A / C 110-220V Input Terminal

7. A / C POWER Switch (Main Power Switch)

8. Built-in BATTERY

9. SMPS 24V.DC (Power Supply) 3CH-1.2A, 6CH-2.2A, 10CH-3.2A, 12CH-4.5A

10. FRONT DOOR

LINE

LOAD

ALARM-3

ALARM-2

ALARM-1

12V OUT

GND

0V

+24V

24VS

SE

NS

OR

SIG

0VS

12V OUT

4-20mA

GND

FAULT

ALARM-3

ALARM-2

ALARM-1

24VS

SE

NS

OR

SIG

0VS

12V OUT

4-20mA

GND

FAULT

ALARM-3

ALARM-2

ALARM-1

24VS

SE

NS

OR

SIG

0VS

12V OUT

4-20mA

GND

FAULT

ALARM-3

ALARM-2

ALARM-1

예비전원시험

부저정지

복귀

예비전원

스위치주의

SI-10 0 IM

전원

고장

3차경보

1차경보

2차경보

%

PPM

LEL

V

SI-10 0 IA

3차경보

전원

고장

복귀

1차경보

2차경보

설정

회로시험

%

PPM

LEL

V

SI-10 0 IA

3차경보

전원

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LEL

V

SI-10 0 IA

3차경보

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LEL

V

1 2 3 4

10

6 7 8 9

5

6. Terminal Diagram

If a fuse disconnected, the red LED will turn on, and that is the sign to replace with new

fuses. When using main unit (SI-100IM), turn on A/C switch. (If you turn off, the back-up

power lamp will turn off.)

7. O

24VS

SE

NS

OR

SIG

0VS

12V OUT

4-20mA

GND

FAULT

ALARM-3

ALARM-2

ALARM-1

ALARM-3

ALARM-2

ALARM-1

12V OUT

GND

0V

+2

4V

GAS DETECTOR

MAIN UNIT (SI-100IM)

ALARM UNIT (SI-100IA)

24V

4-20mA

GND

3Wire

24VS

SE

NS

OR

SIG

0VS

12V OUT

4-20mA

GND

FAULT

ALARM-3

ALARM-2

ALARM-1

GAS DETECTOR

24V

4-20mA

SHIELD

2Wire

Power Input (220V.AC or 24V.DC)

Warning Light (220V.AC or 24V.DC)

Power Input (220V.AC or 24V.DC)

COMMON

To. ASVTo. PLC or HMI

Warning Light (220V.AC or 24V.DC)

LOCAL

To. ASVCOMMON

LOCAL

7. SI-100IM (Main Alarm Unit)

When the power switch is ON, an AC / DC voltage according to an input

voltage and a bar graph according to a voltage level will be displayed. An

arrow on the side of the bar graph indicates a voltage range of the

products at its operational status.

Turn on the battery switch (back-up power) on the back of the product,

and spare power lamp will be extinguished and the device will enter into

a normal state. If you press the back-up power switch to find a spare

power status, the device will display a DC voltage and a charging voltage

will be displayed. When an alarm occurs, the power indication unit will

display the ID of the Alarm Unit. According to primary, secondary and

tertiary alarm set in the alarm, an alarm icon will be blinking. (An ID will

be displayed alternating if alarms occur in many places.) When an alarm

occurs, you can press the buzzer stop switch to mute the sound.

If you press the Return button when the alarm condition is released, the

alarm icon and all operations will turn into a normal status. Because

turning on the failure icon may be caused by failure of the Alarm Unit,

you need to check the Alarm Unit.


When the power is turned on, the device will display the product software

version (1.00.A) for 1 sec and an ID of the Unit from (01) to (12) seconds

for 4 seconds. Then, after 25 seconds of stabilization, a corresponding gas

density will be displayed. When the Power icon is turned on after flashing

during initial stabilization time (30 seconds), the device will enter into a

normal operation (If “ErrL” is displayed and an alarm emits, the wiring in

the detection unit is defective or has bad connection. If the sensor is

defective, you need to have the device checked). If a gas leakage happens,

the gas concentration will go up according to the changes in a

corresponding gas concentration and a bar graph will be also pushed up

by a concentration. As a concentration rises, 1ST, 2nd, 3rd alarm will be

generated according to an alarm setting value, thereby making a

corresponding signal output (12V, Dry Contact, 4-20mA). With the circuit

test switch, you can test a status of the product in normal concentration

state. When you press the test circuit for a second, the concentration bar

graph will go up, thus generating an alarm and an output like those from

gas reaction.(However, during the circuit test, an output of 4-20mA will

not be made). Gas alarm or circuit test can be return to the start with the

return switch. (Individual Return)

If a number of the units generate alarms at the same time, a total return will be made

when the return function of the SI-100IM is used

Using the Setting Switch, you can check the current alarm value and a variety of kinds of

information. Press the Setting Switch, the following will be displayed in a sequence:

AL-1 : Primary Alarm Setting Value (default 15)

AL-2 : Secondary Alarm Setting Value (default 50)

AL-3 : Tertiary Alarm Setting Value (default 70)

Span : Concentration of Calibration Gas (default 25)

N (AL: The number of calibration (depending on the calibration times)

r (LA: Sensor Efficiency Indication (percentage)

[Id]: ID of a corresponding Unit

**. Full Lamp Test: if you turn on/off the power while you are pressing the Return switch,

“LTST” will be displayed in a second and then you will release the Switch. When the entire

bar graph lamp is lit, the test will be completed.

LEL

LEL

LEL

LEL

LEL

LEL

LEL

8. Description of Features by Switch - SI-100IM (Main Alarm Unit)

Spare Power Test Switch

If you continue to press the backup power switch at a state of AC24V

input power, the current voltage of spare power will be

displayed (DC20V will buffer enough) and the spare

power will operate (automatic switching in case of

power failure). When you release your hand from the

switch, the device will operate back with AC24V power.

If there is poor spare power or no spare power (still in process of

charging), spare power lamp will be blinking. (The case is just like when

the spare power switch is OFF on the back of the product or when there

is fuse breakage)

Buzzer-Stop Switch

Mute function for an alarm generated by SI-100IA Unit’s gas detection.

If you press once, it will stop the buzzer, and if you press again, alarm

volume will be generated again. If Buzzer-Stop Switch is activated and

alarm volume is stopped, the lamp around the switch will be blinking.

When you continue to press the buzzer stop switch for more than 1 second (if it were

not for alarm), the device will display the voltage in process of charging and tell you

about a state of charging spare power or a state of “fully charged”

Return Switch

Once you solve the problem with the gas detector after an alarm from SI-100IA Unit, the

concentration will turn into a normal level. The Return Switch is a switch to return all the functions

to a normal status (or the start). In the case of SI-100IA, the switch is to return its own Unit to a

normal status, while the return switch of the SI-100IM is a switch to return all circumstances in

multiple Alarm Units into a normal status (or the start).

SI-100IA When an alarm occurs from the SI-100IA (Alarm Display Unit)

While displaying DI of a unit from which gas leak alarm is emitted to the power display window,

the device will emit an alarm. If an alarm occurs at Unit 2, AU02 will be displayed and if an alarm

occurs at Unit 3, AU03 will be displayed. If an alarm from primary, secondary, and tertiary alarm

unit happens at the same time, the three IDs will sequentially be alternately displayed.

When an alarm occurs, press the buzzer stop switch and

check the place where an alarm came from. After checking

and solving a problem, press the return switch to a normal

gas monitoring status.

V

V


Setting Switch

If you press the Setting Switch, the display will change in the order of left figure each time you

press the switch. First alarm, secondary alarm, and tertiary

alarm, calibration gas concentration, the number of the

times of calibration, calibration sensor efficiencies, and

Unit ID are displayed. You can check the information that

has been set by default in the product.

Test Switch

If you press and hold the circuit test Switch for more than 1

second and then release it, a concentration will rise up to a

range that has been set, just as in the gas alarm. An alarm will

be generated depending on an alarm setting value that has been

set. The concentration bar graph will arise just as shown in the

figures. As a concentration rises as shown in the figures, the

primary, secondary, and tertiary alarm lamp will be turned on according to an alarm value that

has been set and an output will be generated on the back of the terminal (an alarm tone will be

different according to each of the alarms.) After the circuit test operation, you can make the unit

to the start by pressing the Return switch.

In the case of bad connection in the detection unit, sensor failure, and

cable disconnection, ErrL will be indicated and failure alarms will be

emitted

Return Switch

After you solve the problem from gas leak alarm, press the return switch to maintain a normal gas

monitoring status. (The return switch of SI-100IA is a separate individual return switch for a

corresponding unit, which does not affect another Alarm Unit.)

LEL

LEL

LEL

LEL

LEL

LEL

LEL

LEL

9. Changes in the Internal Settings

* Setting changes are available only for SI-100IA (Alarm Display Unit.)

1-1 Gas Alarm Concentration Calibration

If you hold the setting switch for 5 seconds, then

Zero calibration

press a switch labeled as oFSt again, a current concentration will be displayed.

(If a current concentration value is less than 0, it will be displayed as -) If the

current concentration is not zero, press the setting button for more than 1

second. Then ΞSET will be flashing while the current value is adjusted to zero.

(A value of LNG and LPG will turn into -0.9 at the time of Zero calibration and a value in the case of the LIN

will be stored at the moment you press the setting button)

Adjusting a concentration of calibration gas (default 25% LEL)

When the Zero calibration is over and the SET is completed, the display will

show SPAN. If you press the Switch while SPAN is being displayed, a

concentration of the calibration gas that has been set will be displayed. If a

concentration of the calibration gas is different, enter the same number as

that of the calibration gas by using the UP and DOWN key and hold the

switch for 1 second at a status of a changed figure. Then the calibration gas

concentration will be changed.

Gas Calibration

After adjusting the calibration gas concentration, SCAL will be displayed. If

you press the Switch at this status, a current gas value will be displayed.

(Zero will be displayed if the Zero calibration is completed). At this moment,

inject the calibration gas to the sensor at this state.

If there is small change even after the gas is injected for 30 seconds, press

the setting switch for more than one second when a displayed concentration value is different

from that of the calibration gas. Then while ΞSET is being blinking, the connection will be

corrected to that of the calibration gas

* If a Concentration of the Calibration Gas is consistent with a gas concentration that you

hold, all you have to do is to implement the gas calibration. For this, press the setting

switch for 5 seconds, and choose OFST, SPAN, or SCAL with Circuit Test Switch to modify

only parts necessary. By default, a SPAN value is set to 25%. (in case of flammable gas)

*. In case of incorrect operations due to the progress of calibration, turn the power ON / OFF

while holding a setting and return switch simultaneously. And then, for 5 seconds, “FACT”

will be displayed and the device will turn into the initial state. (In this case, gas re-calibration

is necessary)

*. If you press the return switch while calibration is in-progress, your device will be switched

back to a normal mode from the calibration mode.

LEL

LEL

LEL

LEL

LEL

1-2 Change of an Internal Setting Value

Press the setting and the reset switch at the same time for one second, and the

device will enter into the mode. (At the setting change entry mode, the power lamp

will be blinking).

Primary Alarm Value Change (default 15% LEL)

Press the setting switch while AL-1 is shown, a default number will be

displayed. If you need a change while a number is marked, change the

number by pressing UP and DOWN Switch. If you press the Setting Switch

for a second, ΞSET will be displayed flashing, and the setting will be complete.

*. If you change the number and press the setting Switch for a second, the mode will be

exited while the following modification item is not displayed (Re-entry of setting mode is

required). In order to change all settings without re-entering the setting mode,

you need to press the setting Switch while the numbers are already changed.

Then AL-1 will be displayed and all the new settings will be stored in the

internal memory. If you press the circuit test switch > while AL-1 is being displayed, AL-2 will

be shown; you can change a secondary alarm value or change AL-2 with AL-3. After all the

settings are finished, click the setting for one second at the final step. If the ΞSET is blinking,

all the setting values will be modified at once.

Secondary Alarm Value Change (default 50% LEL)

⁎Press the setting switch while AL-2 is shown, a default number will be



for a second, it will be saved and move to the next step.

Tertiary Alarm Value Change (default 70% LEL)

整Press the setting switch while AL-3 is shown, a default number will be



for a second, it will be saved and move to the next step.

Changing a Gas Type (default LNG)

湡When pressing the Setting Switch while styp is displayed, ═LNG will be

displayed. If you press the Circuit Test Switch in order to change it into a

different gas type, you can change a type in an order of LPG-LIN-O2 net.

*. LNG - When connected to Receiver for LNG, apply to LNG sensor gas table.

LPG - When connected to receiver for LPG gas, apply to LPG sensor gas table.

LIN - When connected to receiver other than LPG and LNG, apply to a sensor with linear

reaction applied. O2-When connected to Oxygen Receiver (all settings are modified to match

oxygen) RANGE (0 ~ 30%) Primary alarm (19%), Secondary alarm (17%), Tertiary alarm (23%)

Once you have entry into the setting mode, you press the circuit test switch. Then its corresponding items

will be changed sequentially. (AL-1, AL-2, AL-3, STYP ............). You can pick one selectively and change

it.

LEL

LEL

Changing decimal (Default 0.1)

牴 Press the setting switch when DPNT is displayed, one of the figures, 0,

0.1, 0.02, and 0.03, is displayed. While the number is displayed, press the UP,

DOWN Switch, and you can change a decimal point.

*Only at a setting value change mode among all the setting modes will the UP and

DOWN key operate. At the setting modes (AL-1, AL-2, AL-3, STYP ... ..),

the DOWN key will be operated with the Return Switch Mode to exit

from the setting mode.

Changing a unit by gas (default LEL)

搠 Press the Setting Switch when “Unit” is displayed, and LEL will be

displayed Press the UP and DOWN Switch while it is being displayed. You

can change to a unit of LEL, PPM, P (NT, ____.)

獥

LEL (combustible, explosive gases)

PPM (toxic gases)

PCNT (%) non-oxygen gas

____ No unit indication

*. Unit display in the right of the Gas Concentrations Display Window will be changed.

Change in Low Concentration Range (LOW RANGE) (default 0)

Press the Setting Switch when “LRNG” is displayed, and a default value

will be displayed Press the UP and DOWN Switch while a figure is being

displayed. You can change its value.

Change in High Concentration Range (High RANGE) (default 100)

Press the Setting Switch when “HRNG” is displayed, and a default value



Change in Alarm Operation Method (Default HHH)

16Press the Setting Switch when “NODE” is displayed, and “HHH” will be

displayed. Then with the UP and DOWN Switch, alarm operation method

regarding the primary, secondary, and tertiary alarm will be changed.

*. HHH (combustible and toxicity) alarm is getting larger than that of a concentration

in a sequence from a concentration level 0

*. HLL (oxygen) at a concentration level of 20.9, 1st and 2nd alarm is smaller

than the concentration, and 3rd alarm is bigger than that of a concentration

*. LLL (level) alarm is getting smaller from a concentration level 100

Initial Delay Time (default 30)

Press the Setting Switch when “PDLY” is displayed, and a default value



Primary Alarm Delay Time (default 0.5)

17Press the Setting Switch when “DLY1” is displayed, and a default value



Secondary Alarm Delay Time (default 0.5)

17Press the Setting Switch when “DLY2” is displayed, and a default value



Tertiary Alarm Delay Time (default 0.5)

Press the Setting Switch when “DLY3” is displayed, and a default value



*. The initial delay time can be extended into more than 30 seconds, depending on the

settling time of the sensor.

*. Delay time by alarm type can be immediately or further delayed when an alarm

concentration level is reached.

Change in 12V Voltage Output (default 321)

17Press the Setting Switch when “12VO” is displayed, and a default value



*. 321 (at primary, secondary and tertiary alarm, all can be output.)

*. 32_ (only the secondary and tertiary alarm are output.)

*. 3_1 (only the tertiary and the primary alarm are output.) Likewise, it is possible to

generate 12V selectively at the time of an alarm output.

*. In the case of Main Alarm Unit (SI-100IM), 12V will be output depending on such a setting

4-20mA output (default OFF)

17Press the Setting Switch when “TSTO” is displayed, and a default

value will be displayed Press the UP and DOWN Switch while a figure is

being displayed. You can change its value.

*.This enables a user to choose whether or not the 4-20mA will be output at the circuit test

or the gas reaction. *. By default, this will create an output at a reaction to gas. (If you make

telecommunications by connecting an analog output to the plc or computer, there might be

a case in which circuit test can be mistaken for a gas leak. -You need a careful attention.

Alarm Return (default 321)

Press the Setting Switch when “HOLD” is displayed, and a default value



*. This is the mode to determine whether to memorize alarm or to make an automatic return

at the time of returning to the normal range after gas alarm has been emitted

*. By default, even after the primary, secondary, tertiary alarm all is returned to the normal

range, the alarm and the output will be still stored.

*. Even If the device is interlocked with other equipment and thus alarm is repeatedly on and

off depending on a concentration, a value can changed.

(Primary, secondary, and tertiary alarm can be changed alternatively.)

Output Calibration of 4mA

Output Calibration of 20mA

Output Calibration of Low Concentration Sensor

Output Calibration of High Concentration Sensor

The above four items are requirements during manufacture SENKO. If you make change or

modifications, they can affect the performance and functionality of the product. Any

modifications and changes are prohibited

MULTI GAS MONITOR (SI-100IM)

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